Re: ZF box modifications help!

[Roger Baker <rbaker@xxxxxxxxxxxx>]

You might try:
http://transbuilder.com/

I bought a book from them detailing the trans in my 325 when I turbo'd
it and needed to firm up shifting. 
- --
Roger


"Greg" <greg@domain.elided> wrote:
> I have a non-electronic control version of the ZF 4HP22 4 speed box with
> the usual lock up in 4th gear.  I have a full rebuild kit (A clutch gave
> up, need to do the mod/stator/Teflon seal and going through the box
> while it's out) a 2nd oil cooler to go in series after the radiator
> cooler and an in line filter.  While it's out I'd very much like a
> modification that will improve my use of the car a great deal as I do a
> lot of gentle twisty road driving at around 50mph, including some light
> towing.  I need the torque converter to lock up in 3rd in these
> conditions, in 4th it only locks over 55mph and brings the engine revs
> very low (I have a 3.07:1 rear I believe) meaning I'm churning oil most
> of the time I'm driving and it's not the best drive.  I don't mine even
> putting a valve in and having a manual override to lock the clutch up
> while leaving the selector in 3, any method automatic or not would be
> good if I can select lockup when rolling around the 50mph mark.
> 
> If anyone is familiar with these boxes and can share some thoughts I'd
> really appreciate an email.
> 
> Many thanks in advance,
> Greg (UK)

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